120 strains of endophytic bacteria identified by ERIC-PCR were isolated from wild and cultivated Glycyrrhiza uralensis plants which collected from Erdos Innermongolia province. The identified results indicated that Glycyrrhiza uralensis plants has plenty of endophytic bacterium in density and population, and the density is higher in root and leave than in stem. Partial sequence analysis of 16S rDNA gene of 82 strains indicated that these strains were in a high similarity with 19 known genus which belong to α、β、γ-Proteobacteria、Firmicutes and Actinobacteria. The dominant genus were Bacillus sp., Pseudomonas sp., Pantoea sp. and Serratia sp..